Plaster-board-drying apparatus



G. H. AND E. A.- HERZBERG. PLAsTEn BOARD nYmG AP-PAmus. APPLICATION msn :uw s. |920.

1,366,882.. Patented .rm 25,1921.

/ l ATTORNEY.

UNITED STTEYS PATENT OLFFI CE.`

GEORGEH. HERZBERG AND ERNEST A.. HERZBERG, OF SEATTLE, WASHINGTON.

PLASTERrBOARD-DRYING AFPARATUS.

Application led July 6, 1920.

To @ZZ whom t may `concer/a:

Beitirnown-th'at we,GrnoRcn H. Hanznnne and ERNEST A. Hnnznne, citizens ci? the United States, residing at Seattle, in the county of King and State oit' lVashington, have invented certain new and useful lmprovements in Plaster-Board-Drying Apparatus, ot which the following is a specilication.

This invention relates to driers which a re designed tor use more especially, in supporting plaster-boards or the like during the drying and setting of the plastic material therein.

Vilith the drying racks and trames now employed upon which plaster-boards are sustained about their margins horizontally and in superposed relations the green or partially dried articles are liable to become warped, bulged or otherwise ele-termed' to render the product imperfect.

The obj ect oi' our invention is to dispense with the above mentioned objections, and others, by the provision of etlicient and conveniently operated portable devices to be hereinafter described.

The invention is illustrated in the accom- Janying drawings, in which- Figure 1 is a side elevational view. F ig. 2 is a transversevertical sectional view oi the same. Fig. 8 is a detail sectional View through 3 3 of Fig. 4:; and Fig. 4; is a detail sectional view through 4et of Fig. 2.

In said drawings, let 5 represent an overhead traclr-rail suspended by hangers 6 from a sup ort 7 and upon which are mounted two w eel trolleys 8.

To the swivel elements 9 of the 'frames 10 of both of Said trolleys is secured by rivets 11, or other suitable fasteners, a horizontal carrier bar 12.

The devices thus far described are substantially similar to what are used in overhead carrying systems heretofore employed in transporting material, the present invention residing in the features now about to be described.

Supported below and at right angles to the carrier bar 12 by means of hails or looped hanger rods 13 engaging over the same are horizontal holders, denoted generally by 14. As shown these holders comprise parallel bar elements 15 disposed at opposite sides of the respective hails to Specification of Letters Patent.

Patented Jan. 25, 1921.

serial No. 394,210.

which they are rigidly secured as by rivets erholts 16.

Protrudmg trom opposite sides or' said holders are Vseries of studs 17 extending parallel to the axis o'l the carrier bar 12.

included in the invention is a plurality of tongs which aiford means to suspend the plaster-boards 1S from the holder studs 17. .As most clearly shown in Figs. 3 and et, said tongs comprise two levers tulcrumed intermediate their lengths by a pivot 19, and having pivotally connected to their lower arms 20 'jaw plates 21. The upper arms 22 of the lever members of said tongs y are curved at 23 and cross each other, as shown.

The holders 15 may be moved toward or -from each other to Suit various lengths of plaster boards by shifting the bails 13 longitudinally of the bar 12 upon which they seat.

ln practice the track rail extends into a dry kiln, which is not shown.

The operation of the apparatus will be obvious. A plaster-board 18 has simply to have its upper end inserted between the companion jaw plates after the operator has moved the latter apart to receive the article and when the jaw plates are allowed to close upon the article the weight oi? the same serves to cause it to be reliably held in the grasp of the tongs. The plaster-boards occupy relatively little space and may be conveniently and safely transported to and from a dry kiln by means of the wheeled carrier traveling upon the traclr.

To appreciate the advantages of our invention, it should be understood that the tongs or clips by which the work is suspended derive their power from the weight of the articles which they carry and accommodate themselves to the shrinkage of the plaster-boards which render impracticable most of the devices hitherto tried. By hanging the plaster-boards vertically as in the present invention, the latter dry without warping whereas in the apparatus hitherto used and where the boards are supported horizontally on trucks or cars, they become bent and accordingly do not produce a plane form of plaster-board.

The use of a monorail carrier from which the plaster-boards depend enables the latter to be readily transported and retain the Work in most suitable positions for drying, by affording vertical passages between the adjacent plaster boards through which the air may ascend for expeditious drying of the articles.

l/Vhat We claim is l. In apparatus of the character described, the combination With a suspended monorail track, a pair of trolleys mounted thereon, and a carrier bar connected to said trolleys and disposed belouT the track, of substantially horizontal holder bars, means adjustably movable longitudinally7 of the carrier bar for suspending the holder bars therefrom, studs protruding from the opposite sides of each of said holder bars, and tongs devices engageable over the respective studs and'rendered operative by the Weight of articles to grasp the latter for suspending the same from the holder bars.

2. In apparatus of the character described, the combination with a wheeled vehicle, a track therefor, and a carrier bar suspended by said vehicle below the track, ot horizontal holder bars depending from said carrier bar, series of studs protruding longitudinally of the vehicle from the holder bar and means engageablc over the respective studs for supporting` articles therefrom, said means being rendered operable by the Weight of such articles to releasably grasp the latter.

Signed at Seattle, ldashington, this 28th day of June, 1920.

GEORGE H. HERZBERG. ERNEST A. HERZBERG. lVitnesses PIERRE BARNES, MARGARET G. SUPPLE. 

